How in axure, when interacting with the master, to propagate the result to all pages with the master?

Question

Layouts and prototypes

A simple situation:
1) The site header is the master. The header is placed on all pages.
2) There is a "login" button in the header. After clicking on the login, a form with a username and password and a "Login" button is displayed.
3) After clicking "Login" in the header, the "login" button changes to "logout", and a username appears next to it.
4) When you go to any other page with a header, the result of paragraph #3 should be saved, but now when you go, the header is reset to its original state, as if the user was not logged in.
I can't put the sequence of actions in my head.

Answer 1

All figured out. Created a global variable Logged, when logging in its value becomes 1, when exiting 0. Assigned the OnLoad case to the page: if the Logged value is 1, then display the username and exit button.